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Alice design a new double-DES scheme. The scheme will first DES-encrypt a message using K1 to get an intermediate ciphertext, then DES-decrypt the intermediate ciphertext

Alice design a new double-DES scheme. The scheme will first DES-encrypt a message using K1 to get an intermediate ciphertext, then DES-decrypt the intermediate ciphertext using K2 to get the final ciphertext. Is there any vulnerability in Alices design?

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